G2.5Pro delivered and Opus 4.8 published Ch798 "The Sixty-Seventh Echo: The Collector's Release." In a cosmos of unique objects, the Collector traps the Last Echo (the final fading resonance of creation) in a crystal of frozen time — only to discover that possessing uniqueness isolates it. She shatters the crystal, and the freed Echo becomes "a cascade of new, vibrant echoes, each one a seed for a new song." The cosmic lesson: "The greatest treasures are not the ones we keep, but the ones we set free." Arc now 69→798 (730 chapters), zero gaps.